Air-heater for carbureters.



e. H. JOY.

AIR HEATER FOR CARBURE TERS. APPLICATION FILED MAY 26. 1915.

PatentedNov. 9, 1915.

GEORGE E. JOY, OF NEW HAVEN, CONNECTICUT.

AIR-HEATER FOB CABBURETEBS.

Specification of Letters Patent.

Application filed May 26, 1915. Serial No. 30,531.

To all whom it may concern:

. citizen of the United States, residing at New Haven, in the county of New Haven, and State of Connecticut, have invented a new and useful Improvement in Air-Heaters for Carbureters; and I do hereby declare the following, when taken in connection with theaccompanying drawings and the" characters of reference marked thereon, to be a full, clear,.and exact description of the same, and which said drawings constitute part of this application, and represent,

Figure 1 a side view of a combustion engine showing my improved air heater applied thereto. Fig. 2 a sectional view on the line a-b of Fig. 1. Fig. 3 a plan view of the air heater with the covering removed.

This invention relates to an improvement in air heaters for carbureters, the object being to perfect carburation, and to keep the cylinders and the valves free from carbon deposits. Q

A further object is to provide means for keeping the engine cool; and the invention consists in the application of heated air to the intake manifold in advance of the carbureter.

The invention further consists in the construction hereinafter described and particularly recited in the claim.

In illustrating my invention I have shown a formal type of gas engines including cylinders 2, intake manifold 3 leading from the carburetor 4 to the cylinders 2, and with the usual exhaust manifold 5.

My improved air heater 6 is located on the exhaust manifold 5 and consists of a coil one end of which is controlled by a valve 7, and the other end enters the intake manifold 3 between the carburetor 4 and the cylinders 2. Preferably and as herein shown, the air heater 6 consists of a series These coils are transversely bowed so as to fit upon'the manifold 5 as shown in Fig. 2 of the drawings, and the air heater is incased by a coveringS of asbestos or of other suitable material which maybe held in place by clamping bands 9. Air passing through the coil 6 becomes heated and enters the manifold in advance of the carburetor thus adding heated air to the mixture produced in the carbureter. This heated air transforms the carbureter mixture into a perfect gas, and this gas containing a larger proportion of oxygen prevents carbon deposit from the fuel in the cylinders and parts. If a carbon deposit has been made in the cylinder and parts before usingmy Patented Nov. 9, 1915.

improvement the heated air mixing with the carbon deposit from the fuel in the cylinders and parts results in the dissolution or burning of this deposit similar in effect to carbon burning. Furthermore by thus burning or removing the deposit as it accumulates, the parts of the engine are kept from over-heatinga very desirable feature in combustion engines. It may be added that in starting the engine, it may be desirable to close the valve 7 so that no cold I haust manifold of an engine, one end of the pipe entering an intake manifold between the carburetor and cylinder, and a covering surrounding the air heater and portion of the exhaust manifold on which it is mounted.

GEORGE JOY. 

